考场机经 test89
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Select the two answer choices that, when used to complete the sentence, fit the meaning of the sentences as a whole and produce completed sentences that are alike in meanning.
Space is often referred to as the final frontier, as the only realm of which humankind has still to gain substantial understanding, yet the ocean is also another vast area about which our knowledge is _____.
erroneous
confusing
frustrating
rudimentary
delusive
sketchy
Select two answer choices.
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1.D F
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